I smoke cannabis every one to two weeks. I had a doctor's appointment with a new doctor last Wednesday and was urine tested. I'm assuming this was to test for drugs. I use no other substances. I told the doctor I wasn't a user of cannabis and I didn't feel as though I were lying because it's such a small part of my life, but I would hate for him to think I was lying to him. What are the chances the cannabis is detected given my usage of it every one to two weeks? I use only a small amount, about a pinch, in a small bowl.